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 * @Author: gaohj
 * @Date: 2023-01-10 19:06:17
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 * @LastEditTime: 2023-01-11 09:08:54
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    <title>Document</title>
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        body{
            background-color: black;
        }
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<body>
    <div id="one">
        <!-- <div style="left: 300px;top:400px;z-index:10;"><img src="./xing.gif" width="30" height="30" alt=""></div> -->
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    <script>
        // <!DOCTYPE html>不要写 
        // 定时器 
        // 随机数 

        // 拼接指定的字符串 然后放到指定的div  


        // setTimeout(函数,毫秒); //执行以此 

        // setInterval(函数,毫秒); //循环执行


        // 递归 自己调用自己 
        // function test(){
        //     setTimeout('test()',1000);
        // }
    </script>
</body>
</html>